Materials Literature
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Wastewaters containing chromium (VI) generated by different industrial processes are considered dangerous residues, since chromium (VI) is a powerful epithelial irritant and a human carcinogen. Thus, it is necessary to develop new materials that can be used in the remediation of contaminated water. In the present work…
The mechanical performance of a composite material is decisively controlled by the state of fiber-matrix interface or interphase. Its properties influence the integrity of composite behavior because of its role in transferring stress between the fiber and the matrix. The factors affecting the interface are too complex…
Purpose and objectives of “Project for High Performance Anisotropic Nanocomposite Permanent Magnets with Low Rare-Earth Content”, a subproject of MEXT's “Element Science and Technology Project”, is briefly discussed and recent findings obtained from multi-scale analysis of a hydrogenation-disproportionaion-desorption-…
A significant cause of underground cable failures is the breakdown of electrical insulation between the conductors due to the internal partial discharge (PD) activity. Failure in cable insulation is generally resulted by a degradation phase which may last several years. Modeling and analysis of medium voltage equipmen…
The external force can make a graphene sheet tighten and change its electronic structure. By using the tight-binding method, the energy bands of graphene sheets with zigzag shaped edges and armchair shaped edges drawn by the tensile force are investigated based on considering the nearest-neighbor interaction, and the…
Objective: Assessment of anti-tumor activity of Symplocos racemosa Roxb. (Symplococaceae) plant extracts. Methods: Plant bark was procured, identified and verified. Chloroform, butanol and ethyl acetate extracts were prepared and their cytotoxic activity determined using the XTT salt based cytotoxicity assay in 96- mi…
Ceramic samples of WO3 added (Na1/2Bi1/2)TiO3 were prepared using a high-temperature solid-state reaction method. X-ray diffraction analyses indicate the formation of a single-phase orthorhombic structure. The apparent particle size and lattice strain are estimated using the Williamson-Hall plot. Dielectric studies re…
For successful tissue regeneration, the cells constituting the tissue to beregenerated, such as matured, progenitor, or precursor cells, are necessary. Considering the proliferation activity and differentiation potential of cells, stem cells are practically promising. Among them, mesenchymal stem cells (MSCs) have bee…
International audience
International audience
The dynamic drop test was proposed as a method to evaluate hydrophobicity reduction of polymer materials. In this test, the formation change of a water channel was confirmed, and thereafter, the remained droplets and the dropped droplets on the sampled surface were repulsed each other. The distributions of electrifica…
Flexible pipes are subjected to compressive loading when they are being launched. A set of shoes working together in the launching mechanism compress a region of the pipe in order to provide enough friction for sustaining its own weight during launching. This loading should be applied carefully, once the pipe may not…
Poly(L-lactide) was freeze-dried from p-xylene solutions with varying concentrations. The samples were characterized by differential scanning calorimetry. It was found that the sample produced from the dilute solution exhibited higher non-isothermal crystallization temperature and faster crystallization rate. There wa…
In this paper processing conditions are presented to fabricate HDPE foams with a microcellular structure. The conventional microcellular foams are normally produced by heating a gas-saturated thermoplastic to a foaming temperature near the glass transition of the gas-polymer system. Efforts to foam HDPE in the convent…
Based on the two-parameter phase field model of polycrystalline, the grain growth in polycrystalline material during isothermal holding is simulated by using the adaptive finite element method. The calculated results demonstrates that the cusp grain boundaries are inclined to planar and some small grains coarsen into…
Molecular dynamics methods have been used to investigate the glass transition of three different configuration of polypropylene(isotactic,syndiotactic,atactic).The glass transition temperature has been determined as the temperature marking the discontinuity in slope of the volume-temperature(V-T) simulation data in co…
Interventions design in radiating environment must bring answers to technical and economical constraints on one hand and, on the other hand, to radiation protection principles and rules. Simulation is a key point for a good understanding of the scene and for testing hypothesis. The paper presents how a simulation tool…
A brief review is given of acoustic cavitation,including research methods and recent progress.The paper presents novel application of cavitation in gene transfer.
The least square method is an essential method to compute lattice parameters with high precision. The Cohen's least square method with or without a corrective function of diffraction angle is discussed.The normal equations of seven crystal systems,formulas to compute lattice parameters and estimate error are given.The…
The effect of glass fiber textile on flexural strength of MPC mortar specimens containing glass fiber reinforcement and change of its flexural strength after accelerated aging were researched.The tensile rupture load of glass fiber before and after accelerated aging and pH value of hardened MPC paste with different ag…